A ball of mass 10 kg is dropped from the roof of a building of height 138 m strikes the ground with a speed V1. A second ball of mass 25 kg is dropped from the height 51 m and strikes the ground with a speed v2. What is the ratio K/K2, where K, and K2 are the kinetic energies of the first and second ball at the moment when they hit the ground?
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A ball of mass 10 kg is dropped from the roof of a building of height 138 m strikes the ground with...
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